Type-writing machine.



lc. B. YAW. TYPE WRITING MACHINE.

AP-PL`ICATION FILED DEC. 4. 1916.

Patented MayylQlQ..

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HIEMTDHNEY c. B. YAW. TYPE WRITING MACHINE.

APPLICATION FILED DEC. I4. ISIS.

Piteted May 6, 1919.

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Patented May 6, 1919.

a SHEETS-SHEET 3 HIE ATTDRNEY UNITED sTATns PATENT ortica.

CLIO IB. YAW, 0F ARLINGTON, NEW JERSEY, A'SSIGNOB. TO REMINGTON TYPEWRITER COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented May 6, 1919.

riginal application filed June 9, 1916, Serial No. 102,641. Divided and this application filed December 14, 191e. serial No. 137,014.

To all 'whom it may concern:

Be it known that 1, CLIO B. Yaw, citizen of the United States, and resident of Arlington, in the county of Hudson and State of New Jersey, have invented certain new and useful improvements in Type-lV1iting Machines, of which the following is a speck fcation.

My present invention relates primarily to type-writing machine carriages,` and the main object of the invention, generally stated, is to improve the construction and mounting of such carriages. More .specifically, onevobject of the invention 1s to provide an improved mounting of the carriage wherebythe carriage as a whole may be readily detached from and re-applied to the main frame of the machine, the carriage normally being secured to the main frame by novel means. Another object of theV invention is to provide improved means for supporting the platen* on the carriage, whereby the platen may be readily swung or moved into or out of operative position, so that the introduction or feeding in of paper is facilitated.

To the above and other ends, my invention consists in the features of construction, combinations of devices, and arrangements of parts hereinafter described and particularly pointed out in the claims.

The present application is a division of my prior application Serial No. 102,641, filed June 9, 1916.

The preferred embodiment of my present invention is illustrated in the accompanying drawings wherein Figure 1 is a fragmentary front to rear vertical sectional view showing the rear por tion of a typewriting machine embodying my invention.

Fig. 2 is a transverse sec-tional view showing the carriage detached and the platen swung back in abnormal position.

Fig. 3 is a fragmentary front elevation, partly in section, of the upper part of the machine.

Fig. 4 is a fragmentary end view of the rear portion of the machine on a larger scale than Fig. 1.

Fig. 5 is a fragmentary rear elevation of the upper portion of the machine.

Referring first particularly to Figs. 1, 4 and 5, the main frame of the machine is Y slide bar 12.

shown as comprising a base portion or plates 1 from which rise uprights 2 which support a top plate 3. A guide rail or trackway 4, grooved at its top and bottom, is detachably secured to the main frame in a novel manner which will be particularly described. Fixed by screws 4a to the forward side of said trackway at its ends are uprights or extensions 5, each provided at its top and bottom with cut-outs or hooked portions 6 and 7. These hooked portions are adapted to engage or interlock with pins or projections 8 extending laterally outward from the plates 9, which plates are detachably secured by screws 10 to the rear uprights 2 of the main frame. By this construction the guide rail 4 is secured in fixed relationship with the main frame when the carriage is in place on the machine.

The guide rail 4 receives in the grooves at its top and bottom anti-friction balls 11 that coperate with a slide bar 12 that is part of the platen carriage, said slide bar housing the balls and embracin the trackway 4. Devices are provided or prevent` ing the separation or disconnection of the trackway 4 from the slide bar 12, these devices being in duplicate at the upper and lower sides of the trackway 4. With each set of balls 11 is associated a separator 13 (Figs. 3 and 4) which is erforated to provide openings for the bal s, which are thus maintained properly spaced apart as is usual. Each separator 18 is twisted and shaped near its ends to provide lugs or projections 14, which lugs act as stops coperating with stops or projections 15 fixed in the bottoms of the track portions of the Relative endwise movements between the slide bar 12 and the trackway 4 are limited in both directions by the stop devices 14 and 15 so the disconnection of the carriage from 'its bearing is prevented even when the parts have been detached and removed from the machine. Besides the slide bar 12, the platen carriage further includes end bars 16 which are suitably fixed to said slide bar at its rear side and project upward and forward therefrom. Other end bars 17, fixed to the slide bar 12 outside the end bars 16, project downward. The carriage further includes a platen carrier or frame which is pivotally supported on the truck portion of the carriage hitherto described, and including the slide har 12 and the two pairs of end bars 16 and 17. As described more in detail in my pending application Serial No. 875,103, filed December 2nd, 1914, lsaid platen frame comprises a cap or housing 18 at the right-hand end rof the frame and parallel cross-barsl 19 and 20, which are detachably fixed to said cap and extend leftward therefrom, being secured at their lefthand ends to the left-hand end bar 21 of the platen frame. Journaled on the platen frame are the axle portions 22 and 23 of the axle of a cylindrical platen 24. Cooperative with the front face of said platen are print ing instrumentalities, not shown, but which may be of any desired construction, such for example as those illustrated in my co-pending application Serial No. 855,551, filed August 7, 1914. rIhe cap or rightehand end bar or portion of the platen frame 18 is provided with a lug 18a which receives a pivot screw or connection 25 by which the right-hand end of the platen frame is pivotally -connected to the end bar 16 at the right-hand end of the Carriage. rlhe left-hand end bar 21 of the platen frame is similarly pivotally connected at 26 to the left-hand end bar 16 of the carriage truck. The pivotal connection of the platen frame with the truck is, it will be observed, below the platen and substantially beneath the platen axis.

In order better to control the pivotal or swinging movements of the platen frame on the carriage truck additional connections between the platen frame and said truck are employed-comprising two pairs of links, one pair at each end of the platen frame. Each pair comprises a short link 27 and a longer link 28, one end of each short link being connected to one of the end bars of -the platen frame and the other end being pivotally connected at 29 with the upper end of the longer link. The lower ends of the longer links are connected to the carriage truck and in order to synchronize movements are preferably fixed to the outer end portions of a rock shaft 30 which takes bearings at its ends in the end bars 17. Fixed to the outer end of the end bar 21 is a finger piece or knob 31 by which swinging movements of the platen may be controlled. The normal or forward position of the platen is illustrated in Fig. 1 and its rear or abnormal position in Fig. 2. Devices are provided for limiting the extent of swing of the platen and platen frame, said devices comprising stop lugs 16a which cooperate with the end portions of the platen frame to arrest it when the platen is thrown back. In this position a wide gap or throat is provided between the platen and the paper feeding devices which coperate with its front face, said paper feeding devices serving also as stops to limit the forward swing of the platen and hold it in normal position.

The paper feeding devices aforesaid form in part the subject-matter of my said parent application Serial No. 102,61, and accordingly need not be described in much detail. They comprise feed rollers composed of sections 32 and 33 supported on parallel shafts 34 which bear in rockers 35, each pivoted at 36 on an end bar 16. The platen is maintained in coperative spring-pressed engagement with the feed rollers 32 and by spring means which comprise two draw springs 39, each anchored at itsv forward end to a pin 40 projecting upward from the slide bar 12, the rear end of each draw spring being connected to one of the links 28 between its ends. Normally the draw springs hold the platen and the feed rollers in operative engagement, while abnormally or when the platen is swung back they hold the platen frame in contact with the stops 16il and prevent rattling, the springs having double acting functions. The feed rollers coperate with the platen through openings in a guide plate or trough 42 which inclines downward and rearward under the platen and is screwed to the slide bar 12. Over this plate, paper may readily be inserted when the platen is swung back to the Fig. 2 position. A stationary extension or supplementary guide plate 55 is removably secured to the rear portion of the main frame of the machine.

Endwise movements of the carriage are limited by stop devices, which, as illustrated in Figs. 3 and 5, comprise a toothed stop bar which is mounted.- on the carriage, being secured at its ends to the end bars 16. Adjustably mounted on said stop bar are margin stop devices `comprising a bell trip 8l, line stop 82 and preferably two margin stops 83. These adjustable devices coperate during endwise movements of the carriage with a rocking or stop member 8lwhich is mounted on the trackway i and is comprised in the train of line lock and bell ringing devices, the upper end of the rocking member 84 lying inthe path of move` ment of the adjustable stop devices. on the bar 80. Said member 8i is screwed to a shaft or bearing part 84 which takes bearings in lugs 85 which are secured to the front face of the trackway 4.. t will be observed that the margin stop devices comprise adjustable stops mounted on the carriage and also the cooperating stop 84 mounted on the trackway 1, and further it will be noted that when said trackway is removed from the machine it results in the removal also of the stop bar 8O with its stop devices, as well as of the coperating rocking device 841. The margin stop devices have the further function of preventing disconnection of the carriage from its trackway 4 when the parts are removed from the machine so that they constitute a safety device for this purpose in case thestop devices 14 and 15 should for any reason prove mell'ective. v

Step by step carriage feeding movements are caused through operating the prmtmg keys by suitable escafpement devices, such for example as are disclosed in my application Sr. No. 855,551. Said escapement devices comprise a rack bar 86 mounted on the slide bar 12 (Figs. 4 and 5). Said `rack bar is provided with two sets of teeth, one meshing` with a toothed wheel or carriage 1mpelling element 87 mounted on the main frame and controlled by a spring drum, the other set of teeth coperating with escapement devices proper that comprise a shaft 88 having stationary bearings and which carries near its upper end a pinion 89 capable of limited slidable movement on the shaft 88. Said pinion 89, meshing normally with the rack bar 86, is adapted to transmit movement to the shaft 88 by means of a clutch member 92 which is rotatably and slidably mounted on the shaft below the pinion 89 and is provided at its upper end with ratchet teeth which'mesh with corresponding ratchet teeth formed in the under .face of the pinion 89. Fingers 93, projecting downward from the clutch member at opposite sides of theshaft, slidably engage with notches in a flange 95 thereon, thus forcing the clutch member to turn always with the shaft. Key controlled devices mounted on the carriage engage in a groove `96 in the clutch member` and are operative to move it downward to disengaged position so las to permit the pinion 89 to turn on the .shaft 88, the carriage being thereby released and permitted to run freely leftward under the pull of the spring drum. The downward movement of the clutch member is in opposition to a spring 97 coiled around the shaft 88, which spring maintains said clutch member normally engaged with the pinion 89 and also restores said clutch member after the releasing operation. The lower end of the shaft 88 is provided with an escapement wheel which cope-rates with escapement V dogs as disclosed in my application Serial No. 855,551. Releasing devices, mounted on the carriage, comprise spring-pressed release levers 98 and pivoted respectively to the left-hand and right-hand end bars 1G, which are provided at their ulpper ends with release keys 100 and 101. The lower ends of the release levers 98 and 99 are adapted to cooperate with fingers 102 lixed to opposite ends of the releasing plate or bar 103 loosely supported on a rod 101 that is secured at its ends to the bar 17. During endwise movements of the carriage the bar 103 slidably cooperates with a beveled roller 105 mounted on a pin 106 carried by a lever member 107 having a stationary pivot 108, Said lever member carrying a pin 109 which engages in the groove 96. The construction is such that when one of the releasing keys 100 or 101 is pressed, it operates to swing the release bar 103 on its pivot, causing said bar, through the roller 105, to rock the lever member 107, the pin 109 thereupon acting on the clutch member 99 to release the pinion 89, as has been described. It will be understood that when the carriage and its trackway are removed from the machine, the releasing devices, down to and including the bar 103, will also be removed, while the coperating parts, from the roller 105 downward will remain on the machine Jr'rame.

It will be noted that the support for the platen comprises two relatively movable.

parts, one part being the carriage comprisin the truck and the platen frame, and the ot 1er part being the trackway on which the carriage runs, and further that one of these supporting parts, the trackway in this case, is held in fixed relationship to the main frame by devices which are gravity controlled in lthe present instance. It is clear from F ig. 4f that the weight of the platen and the carriage structure above the pins 8 tends to maintain the hooks 6 and 7 in effective engagement with said pins. In other words, the whole carriage structure is a hanging one, the platen support being suspended, the weight of the parts being effect-ive to maintain the hooks 6 and '7 pro-perly engaged with the pins 8. The carriage track bar is supported vertically and is held in fixed relationship to the main frame by the hooks and pins which are arranged to act ina vertical plane and are effective to work in the direction of the weight or gravity 'of the whole carriage apparatus. The aXis of the platen is slightly forward of the plane of the pins 8. As a result, latching devices or devices requiring an operation or actuation additional or supplementary to the detaching and attaching operations and heretofore considered necessary to detachable carriage constructions, are dispensed with, and by a simple lifting operation the platen and its supporting parts, conxprising the carriage and trackway, may be readily removed from the machine and as readily replaced or substituted by another carriage. This simplicity of the operation of removal and replacement becomes highly important in work where it is frequently necessary to change carriages, as is common in some styles of commercial typewriting work. Both when the platen and its two supporting parts are on the machine and when they are removed therefrom, the disconnection of said parts is prevented by means comprising ythe ball separators and coperating stops, so that when the platen is changed, in effect it is but a single contrivance which is remoif'ed and` replaced. The devices which operate through the force of gravity confine the carriage, when it is on the machine, to an unvarying path of movement relative 'to the main frame, owing to the fact that said devices hold the trackway in fixed relationship with said main frame.

The movements of the platen frame on the carriage truck are 'controlled largely by a iinkage comprising two pairs of links, each pair as described comprising' one of the short links 27 and one of the long links 28. y

Various changes may be made without departing from my invention.

What I claim as new and desire to secure by Letters Patent, is:

l. In a typewriting machine, the combination with a mainframe, of a platen, a

suspended support therefor comprising two relatively movable parts, and devices for fixing the relationship between one of said parts and the main frame of the machine,

said relationship being `maintained solely by the weight of the parts.

2. In a typewriting machine, the combination with a main frame, of a platen, asuspended platen support comprising two relatively movable parts, means for preventing said parts from becoming disconnected, and devices for locking one of said parts in fixed relationship with said main frame, said relationship being maintained solely by the weightof the parts.

3. In a. typewriting machine, the combination with a main frame, of a platen, a suspended support therefor comprising two parts slidably connected together, and means for locking one of said two parts in fixed relationship with said main frame, said means being rendered eifective in part by the weight of said platen.

4. In a typewriting machine, the combination with a main frame, of a suspended traveling carriage, and means rendered effective by the weight of the carriage parts to confine said carriage to an unvarying'path of. movement relative to said mainframe.

5. In a typewriting machine, the combination with a main frame, of a suspended trackway, devices for maintaining said trackw'ay in fixed relationship with said main frame and providing the sole support of said trackway on said frame, and a carriage mounted on said trackway, said rela,- tionship being maintained solely by the weight of the parts.

6. In a typewriting machine, the combination of a, carriage, a-suspended trackway to which said carriage is connected, means for preventing disconnection of said carriage and said trackway, and'devices forv maintaining said trackway in fixed relationship with said main frame, such relationship being maintained solely by the weight of the parts.

7. In a. typewriting machine, the combil nation with a main frame, of a suspended trackway disconnectible from said main frame, devices for holding said trackway in fixed relationship with said main frame, said devices providing the sole support of said trackway and said relationship being maintained solely by the weight of the parts, a carriage, and roller bearings for connecting said carriage with said trackway.

8. In a typewri'ting machine, the combination of a carriage,a grooved support therefor, roller bearings between said support and said carriage, devices for preventing disconnection of said carriage from said support, disconnectible devices for maintaining said support in fixed relationship with the main frame of the machine, and a carriage impelling element on the frame and connected to said carriage, said support being removable from said main frame by a simple lifting operation, the connection between said carriage and said carriage impelling element being automatically broken when said support is removed.

9. In a typewriting machine, the combination of asuspended track bar rooved along its top and bottom sides,y devices for detachably securing said track bar to the main frame of the machine, a carriage, and sets of roller bearings coperating with the grooves in said trackway to slidably connect said carriage with said trackway, said devices being rendered effective solely by the weight of the parts.

10. In a typewriting machine, the combination of a suspended track bar grooved along its top and bottom sides, devices for detachably securing said track bar on the main frame of the machine, a carriage, sets of roller bearings coperating with the grooves in said trackway to slidably connect said carriage therewith, separators for said sets of roller bearings, and stops coperative with said separators to prevent disconnection of said carriage from said track bar, said devices being rendered effective solely by the weight of the parts.

1l. In a typewriting machine, the combination with a main frame, ofa suspended track bar, a carriage mounted thereon, slotted members fixed to said track bar near its ends, and projections on said main frame with which said slotted members engage, the weight of the carriage tending to prevent disengagement of said slotted members from said projections.

l2. In a typewriting machine, the combination with a main frame provided at opposite sides with sets of outwardly extending pins, ofi-a track bar provided' near its opposite ends with sets of hooks adapted to be maintainedengaged with said pins by the force of gravity, and a carriage mounted on said track bar.

18. In a typewriting machine, the combithe nation with a main frame provided at opposite sides with sets of outwardly extend ing pins, of a track bar provided near its opposite ends with sets of hooks adapted to be maintained by the force of gravity in engagement With said pins, a carriage movable alongr said track bar, and means for preventu ing disconnection of said carriage and said track bar. l 14. In a typewriting machine, the combination of sets of pins fixed to the sides of main frame and projecting therefrom, each set comprising two pins one arranged directly above the other; a track bar provided near its ends With hooked portions adapted to engage with said pins 5 a 'arriage comprising` a slide bar arranged in rear of said track bar and slidably connected with said track bar at its top and bottom sides; and a cylindrical platen supported by said carriage and arranged above said sets of pins and with its axis forward thereof.

15. In a typevvriting machine, the combia nation With a main frame provided With engaging devices, of a track b ar provided with enga-ging devices co'ierating through the force of gravity With the engaging devices on the main frame, a carriage comprising a slide arranged in rear of said track bar and slidably connected with said track bar at its top and bottom sides, and a platen supported by said carriage and arranged above the coperating engaging devices, the axis of said platen being in a vertical plane in front of said coperating engaging devices.

16. In a typewriting machine, the combination `with a main frame provided With engaging devices, of a track bar provided with engagingdevices copcrating through the force of gravit-y with the engaging devices on the main frame, a carriage coperative with said track bar,'and a platen on said carriage and above ing devices.

17. In a typeivriting machine, the combination of sets of pins fixed to the' sides of the main frame and projecting oppositely therefrom, each set comprising two pins one arranged directly above the other, a track bar provided near its ends with hooked portions adapted to engage with said sets of pins, a carriage supported by said track bar, and a platen mounted on said carriage and arranged above said sets of pins.

18. In a typeWi-iting machine, the combination with the main fra-ine of a platen carriage, a trackway With which said carriage is slidably connected, means for securing,1 the trackway in fixed relationship with the frame, 'said means being rendered effective solely by the Weight of the parts, and carriage impelling means on the main frame and operatively connected with the carriage, the connection between said impelling means being automatically broken when the carltain said platen in oppositely said cooperating engag-` nation of a carriage frame or truck, a platen frame pivotally connected to said carriage frame, a platen on said platen frame, a linkage also connecting said platen frame with the carriageY frame, and spring means connected to said linkage and tending to mainnormal relationship with said. carriage frame.

20. In a typewriting machine, the combination of a frame pivotally connected to said carriage f 1ame, a platen on said platen frame, a. linkage also connecting said platen frame with the carriage frame, spring means connected with said linkage, and a stop device for determining the normal relationship of said platen. with said carriage, said normal .relationship being maintained by said spring; means;

2l. In a typewritingr machine, the coinbination of a carriage frame or truck., a platen frame pivotally connected to said carriage frame, a platen on said platen frame, a links age also connecting said platen frame with said carriage frame. spring` means connected to saidlinkage` and a stop device for deter mining` the normal relationship of said platen with said carriage, said normal relationship being,r maintained by said spring means, saidplaten being movable to abnormal position with relation to said carriage, said spring means being also effective to .maintain said platen in said abnormal position.

22. In a typevvriting machine, the co1nbination of a carriage frame or truck, a platen faine comprising end bars pivotally connected to said carriage frame, a platen on said platen frame, links connected to Said end bars, and other links pivotally connected to said carriage frame and also to sa'd first recited links.

23. In a typewriting machine, the combination of a carriage frame or truck, a platen frame con'iprising end bars pivotaily connected to said carriage frame, a platen on said platen frame, links connected to said end bars, a rock shaft on said carriage frame, crank arms at the ends of' said rock shaft connected to said links, and spring means connecting said crank arms with said carriage frame and effect-ive t0 maintain said platen in :normal relationship with said carriage frame.

24. In a front strike typewriting machine, the combination of a carriage. frame or truck, a platen fra-me comprising upright end bars pivotally connected at their lower ends with said carriage frame, a platen mounted on said platen frame, a rock shaft on said carriage frame, a pair of upright crank s131115 on said rock Shaft, and a pair of carriage frame or truck, a platen links pivotallyconnecting the upper ends ot said crank arms to said platen frame.

In a typewriting machine, the combination of acarriage frame or truck, a platen frame comprising end bars pivotally conn'ectedto said carriage trame, a platen on said platen frame, links connected to said .I end-bars, other linksipivotally conn "fed to Said carriageframe and also to said fi st recited links, and springs connecting' cert-ain of said links with said carriage frame, such means being effect-ive to maintain said platen in normal relationship to said carriage frame.

' 26. In a' typewriting lmachine, the combination of a carriage frame or truck, a platen frame comprising end bars pivotally connected-v to sald carriage frame, a platen on said platen frame, links connected to said end bars, other links plvotally connected to said carriage frame and also to said first 'endswith said carriage frame-5 a platen mounted on said platen frame; a pair of upright links pivotally connected at their `lower ends to said carriage frame; and a second pair of links pivotally connected to the upper ends of said. first named pair of links and also pivotally connected to said platen frame. l

128. In a front strike typewriting machine, the combination of a carriage frame or truck, a platen trame comprising upright end bars pivotally connected at their lower ends with said carriage frame; a platen mounted on said platen frame; a pair of upright links pivotally connected at their lower ends to said carriage frame; a second pair of links pivotally connected to the first named pair ot links and also pivotally connected to said platen frame; and spring means tending to swing said upright links forward.

29. In a front strike typewritingmachine, thecombination of a carriage fra-me or truck, a lplaten trame comprisingend bars pivctally connected attheir'lower ends with. vsaid carriage frame, a -plate L"ncninted on said platen frame, a pair of upright links pivotally connected at their lower ends to said carriage frame, a second pair of links pivota-lly connected to the upper ends of said first named pair of links and also piv- -ptally connected to said platen trame, said second pair of links inclining normally upward and forward so that their pivotal points of connection to said platen frame are above and forward of their pivotal points of connection with said upright links; and spring means tending constantly to swing said upright links forward, said platen frame bein movable backward to abnormal position, thereby bringing the second recited pair of links to substantial horizontal position and renderino said sprin means e'ective to maintain the platen an platen frame locked in abnormal position.

30. In a typewriting machine, the combination of a carriage, a stop bar thereon, stops adjustable on said stop bar, a trackway with which said carriage is slidably connected, said trackway being detachable from the main frame of the machine, and a line lock stop on said trackwav coperating with said first named stops, said last recited stop device being comprised in a train of line lock mechanism and said stops also assisting 'to prevent disconnection of the carriage from its trackway when the latter is detached from themain frame.

31. In a typewriting machine, the combination of a carriage, a trackway with which said carriage is slidably connected, escapement deviceson the main frame, key controlled releasing devices on said carriage, and other releasing devices on the main frame with which the carriage carried releasing devices coperate, the releasing devices on the main frame being disconnected from the carriage carried releasing devices when the traclnvay is removed from the main frame and reconnecting with said carriage carried releasing devices when the trackway is replaced.

32. In a typewriting machine, the combination of a carriage, a platen mounted to swing thereon, a feed roller cooperative with the surface of the platen, and means for swinging the platen on the carriage, the swinging movement ofthe platen in one direction being limited by said feed roller.

Signed at the borough oi' Manhattan, city of New York, in the county of New York, and State of New York this 13th day of December, A. D. 1916.

' CLIO B. YAW.

CHAnLns E. SMITH.

@denies cf this-.patient liiiayfoe; obtanedwfor ve cents each, by addressing the Commissioner of Patents,

y Washington., D. t3. 

